[OLSR-users] Re: a little feedback and questions

[Jim Thompson]

You're missing bits of it then.

http://wifinetnews.com/archives/003989.html
http://dailywireless.org/modules.php? 
name=News&file=article&sid=2750&src=rss10
http://wifinetnews.com/archives/003972.html
http://www.smallworks.com/archives/00000072.htm
http://www.smallworks.com/archives/00000077.htm


These last two are (natch) me.

Jim

On Jul 12, 2004, at 7:30 AM, Bruno Randolf wrote:

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> hi!
>
> i just found this discussion about mesh scalability:
> (http://dailywireless.org/modules.php?name=News&file=article&sid=2750)
>
> and then there is a nice presentatiopn from david reed, but it`s more  
> about
> open spectrum:
> How wireless networks scale: the illusion of spectrum scarcity
> (http://www.reed.com/dprframeweb/dprframe.asp?section=openspec)
>
> greetings,
> bruno
>
> On Monday 12 July 2004 11:04, (spam-protected) wrote:
>> Hi Aaron,
>>
>> It's cool you're checking out OLSR for your rooftop project!
>>
>> My comments are inline.
>>
>>> what happens is that regularly whenever la17 sends out some bigger
>>> requests or receives something bigger than the 64 byte ping packet,  
>>> the
>>> connection drops down to a few kB/s. With normal ping packets we  
>>> would
>>> have theoretially a thruput of 2-11mbit (signal quality is very good!
>>> channel is set to 2 mbit).
>>>
>>> any ideas where this could come from? any knobs where we could turn  
>>> at
>>> olsr or do you think we have a layer 2 problem?
>>
>> I really don't know... I've seen some strange errors when using  
>> orinoco
>> gold cards - but nothing like this. As for the WRT other people on  
>> this
>> list have done a great deal more work with this hardware. Anybody got  
>> any
>> ideas?
>>
>> What if you set up static routes. Is the problem is still there?
>>
>>> There seem to be two opinions here: 1) meshnetworking bandwidth will
>>> scale with O(1/n) where n is the number of nodes and 2)  
>>> meshnetworking
>>> bandwidth will scale better than that :)
>>> question: are there any mathematical models for olsr? would somebody  
>>> be
>>> interested in discussing models?
>>
>> When talking about scalability concerning bandwidth I think the  
>> limitations
>> of OLSR could be shown through simulations. I have not done any work  
>> on
>> simulations, but there probably are a lot of papers out there  on the
>> subject(I'm on vacation writing this on a sloooow dial-up connected
>> box, so I didn't bother downloading any of the PDFs that a google  
>> search
>> showed ;-) )
>> If you are interested in a more theoretical discussion I suggest  
>> posting
>> the question on the MANET mailing-list.
>>
>> Sorry if these answers are a bit short and unprecise - but as  
>> mentioned,
>> I'm on a vacation here...gotta go :-)
>>
>> regards,
>> Andreas
>> _______________________________________________
>> olsr-users mailing list
>> (spam-protected)
>> https://www.olsr.org/mailman/listinfo/olsr-users
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